H&K factory mags??

Beretta 92

I'm looking at the auctions for H&K mags for an SP-89. How can you tell if they are factory mags? Most listed as HK factory mags are only marked "made in Germany" Anyone know about this? Are these factory mags?

Werwolf

Apparently there are factory H&K magazines from what I have found that are just marked Made In Germany, although I was used to the older marked magazines that were actually marked H&K or Heckler & Koch as well.

dotcom_guy30

some of the g3 magazines were just marked with a date